﻿<p><em>IfcCoordinateReferenceSystemSelect</em> is a select between either the local engineering coordinate system, represented by the <em>IfcGeometricRepresentationContext</em>, or another coordinate reference system, represented by <em>IfcCoordinateReferenceSystem</em>, to be the source of a coordinate operation.</p>

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HISTORY&nbsp; New select type in IFC4.
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